Electric regulation.



1-. L. CREVE LING.

ELECTRIC REGULATION.

APPLICATION FILED AUG-2h I9II- RENEWED AUG- 6, I912.

1,177,686. Patented Apr. 4,1916.

WIN/E8858 UNITED STATES PATENT orrron JOHN L. CREVELING, OF NEW YORK, N. Y., ASSTGNOB. 'ro sArErY. can. nnzirmo LIGHTING comrnmr, A conronnrron or NEW JERSEY.

AND

' ELECTRIC REGULATION.

Application filed August 21, 1911, Serial No.

7 T all whom it may concern:

Be it known that I, JOHN L. CREVELING, a resident of New York, in the county and State of New York, have invented certain new and useful Improvements in Electric Regulation, as set forth in the annexed specification and drawing, forming a part thereof.

My invention pertains to that class of electric regulation wherein it is desired to automatically regulate a dynamo, or generator, in a predetermined manner.

As my invention is particularly applicable to that class of electric systems wherein a generator is used to charge a storage battery and supply current to lamps or other translating devices, it will be described with reference to such a system. f

In the drawing 1 represents a dynamo or generator provided with the usual field coil 2 having in series therewith two carbon piles 3 and 4 mechanically separated and 1 tion is limited as by 'oted as at 7. mally draws the.

' sistance electrically united by the lever, or movable member, 5 connected-with the lever 6 piv- An adjustable spring 8 norlever'6 upwardly against the adjustable stop 9, while the motion that the lever may have in a downward directhe adjustable stop 10. The lever 6 is provided at one extremity with the core of iron, or other magnetic material, indicated at 30. V

11 is a bell-crank lever normally drawn in an upward direction as by the adjustable spring 12 in such manner as to tend to compress the carbon pile 3 and lower the rethereof. The lever 11 carries the or other magnetic material,

core 13 of iron,

that the resistance. 3 may and it is obvious be made to depend upon the position of the said core.

1a is a lever normally drawn in an upward direction as by the adjustable spring 15 in such manner as to tend to compress the carbon pile 4 and lower the resistance thereof. The lever 14 carries the core 16 of iron, or other magnetic-material, and the resistance of the pile 4 will obviously depend upon the position of the core 16.

17 represents the positive lead of the generator which is carried to one side of the storage battery 31 and then through the main 18, coil 19 and wire 20 to one side of the lamp regulating resistance 21, the oppo- Speeification of Letters Patent.

' present invention.

Patented Apr. 4. 1916.

645,251. Renewed August 6,1912. Serial No. 713,678.

site side of which is connected as by the wire 22 with one terminal of the translatlon circuit switch 23, from the,other side of which the wire 22 continues to the positive terminals of the lamps or other translating devices indicated at 24. The negative terminals of the translating devices 24 are connected with the lead 25 which is carried to the opposite side of the battery and con: nects with one side of the automatic switch 26, the opposite sideof which is connected through the solenoid 27 with the negative terminal of the generator.- 28 is a fine winding, or solenoid, in shunt across the generator circuit as indicated.

The solenoid 19 is so arranged that energization of the same tends to draw the lever 6 downwardly against the action of spring 8 and decrease the resistance 3 and increase so arranged that energization of the same tends to draw the core 16 downwardly and, -1ncrease the resistance fL' The solenoid 29, inshunt across the translation circuit, tends to draw the core 32 downwardly in such manner as to tend to increase the resistance 21. j

The switch indicated by 26 is preferably of the automatic variety adapted'to close the circuit when the generator voltage is substantially equal to that of the storage battery, and as many switches of this character are well known in the art, the presence of one of this type of switch is merely indicated in a conventional manner, lar form thereof forming no part of my The operation of my invention is substantially as follows:

excess in'current will cause the lever 11 to the particu- If the generator be running at such voltage as to charge the may be regulated by proper lead 17, battery 31, lead 25, r

be depressed against the action of spring 12 so as to increase the resistance of the carbon pile 3 and prevent the generator output from exceeding its predetermined limit. If now the battery be charged at this desired maximum and until its voltage has risen to the maximum voltage desired to haveimressed across its terminals,I then so adust the spring 15 that this voltage will not "be exceeded owing to the a'ction of the coil .28 which upon any excess .will depress the lever 14 and increase. the resistance 4 in such manner as to prevent the generator -voltage rising above this predetermined limit. If the voltage now be held at this limit and the battery voltage rise still farther, the charging current will, of course, decrease or taper off in a well-known manner. If now the lamp switch 23 be closed, current will flow through the translating devices and also through the coil 29, and I.

so adjust the lamp regulator that the coil 29, by operation of the resistance 21, will hold a constant voltage upon the transla tion .circuit in a well-known manner. The current flowing to the translating devices will pass through the coil 19 and tend to draw the lever 6 downwardly and swing the member 5 in 'a left-handed direction, the

effect of which is to tend to compact the carbon pile 3 or change the adjustment'thereof in such manner that a higher current will be held constant by the coil 27 and also its effect will be to decrease the compression upon the pile 4 so as to alter the adj ustment thereof in suchmanner that a lower voltage will be necessary across the coil 28 to cause the same to afl'ect the generator to prevent the desired voltage from being exceeded.

In other words, the maximum of the current regulator will be increased and the maximum limit of the voltage regulator will be decreased when the lamp load is thrown on. By properly adjusting the spring 8 and dimensioning the parts of the regulator, I cause the adjustment of the two regulators to be affected in accordance with the load upon the translation circuit. With this arrangement it will be obvious that when the lamp circuit load-is on, the generator will be caused, if regulated'for current, to de liver a larger current than when the translation circuit is inoperative. Also, if the voltage changes and the lamp circuit load be on, the voltage across the generator, which is held constant, will be less than that when the translation circuit load is ofl",

and therewill be less drop across the lamp regulator and less waste of energy than if the maximum voltage were maintained across the generator with the lamp load on.

From the foregoing it will be obvious that I have produced a system of regulation wherein a dynamo is regulated both in rethe translation circuit.

sponse to current fluctuations and in response to voltage fluctuations and that I have provided means whereby-the adjustment of the regulator for; both these factors is altered in accordance with theload upon I do not wish in any way to limit myself to the exact details of construction nor'exact mode of operation set forth in the foregoingspecification which are given merely to illustrate one type of system embodying the essentials of invention,.for itis obvious that Wide departure maybe made in the way of details without departing from the spiritand scope of my invention which is as set forth in the following claims:

1. Means for regulating a generator comprehending a regulating element, and means for operating the same in response to current fluctuations; a regulating element, and means for operating the same in response to voltage, fluctuations; and means for simultaneously affecting the adjustment of said elements.

2. Means for regulating a generator comprehending a regulating element, and means for operating the same in response to current fluctuations; a regulating element, and means for operating the same in response to voltage fluctuations; and automatic means for simultaneously afl'ecting the adjustment of said elements.

3. The combination with a generator and 4 translation circuit; of means for regulating the generator comprehending regulating means aflected by current fluctuations; regulating means affected by voltage fluctuations; and means for varying the adjustment of both the current and voltage oper-- ated means responsive to fluctuations in the translation circuit.

4. The combination with a generator and a work circuit; of means for regulating the generator comprehending a regulating element and means for operating the same in response to current fluctuations; a regulating element and means for operating the same in response to voltage fluctuations; means for affecting both of said elements; and means for operating said last named means in response to a characteristic of the work circuit.

5. In an electrical system, a generator; a work circuit and its translating devices; a carbon pile resistance for regulating the generator; a coil for controlling said resistance responsive to current fluctuations; a second carbon pile resistance for regulating the generator; a coil for controlling said second resistance responsive to voltage fluctuations; a carbon pile rheostat in the work circuit for regulating the potential at the translating devices; a coil for controlling the action of said rheostat responsive to voltcuit; a rheostat for re voltage fluctuations;

said controlling Q increases in voltage of the battery.

rheostat regulates the efiect of said current 'and voltage coils on their respective carbon a generator; a

trolling said variable resistance; and means whereby said variable resistance acts to regulate the effect of both the said controlling means' on their respective rheostats 1n the regulation 6f the generator. r l.

7. In an electrical system,-a generator; a storage battery and work circuit supplied thereby translating devices in the work cirgulating" the generator; means for controlling said rheostat responsive to current fluctuations; a second rheostat for regulating the generator; means for controlling said rheostat responsive to a variable resistance for regulating the voltage at the translating devices; a 0011 responsive to voltage fluctuations for controlling said variable resistance; and means whereby said variable resistance acts to regulate the effect of both the means on their respective rheostats in the regulation of the generator to cut down the battery current upon certain 8. In an electrical system, a main generator; a work circuit connected to be supplied thereby; means for regulatin the generator responsive to' current fluctuations; means for I age fluctuations;

regulating the generator responsive to voltmeans for independently regulating the voltage applied to the work circuit responsive to voltage fluctuations; and means whereby said last mentioned means will govern the eflect of both the first mentioned regulating means in the regulation of the generator.

9. In an electrical system, a work circuit; a main generator; a shunt field winding therefor; a carbon p1le resistance in series with said field winding; an electro-magnetic device for controlling said carbon pile including a coil responsive to variations in generator current for controlling said device to regulate the generator; a carbon pile resistance in series with said field winding; an electromagnetic device for controlling said carbon pile including a coil responsive to variations in generator voltage for controlling said device to regulate the generator; a regulating device for regulating the voltage at the work circuit; and means whereby said regulating device governs the eflect of said trollin flucing devices; and

electromagnetic devices in the control of their respective carbon piles.

10. In an electrical system, a Work cirsupplying the same; a rheoelectromagnetic device for controlling said rheostat, including a coil responsive to variations in the generator current for consaid device, and a coil responsive to variations in the generator voltage for controlling said device; regulating means for regulating the voltage on the translat means whereby said regu lating means governs the efiect of the said coils in the control of their respective rheostats.

11. The combination with a generator;

' current actuated regulating means therefor; voltage actuated .regulating means therefor; of a translation circuit; a regulator for the translation circuit; and means whereby the operation of said translation circuit regulator afli'ects directly both the generator regulating means. I

12. The combination with a generator and a regulator therefor, comprehending regulating means and means for operating'the same responsive to current fluctuations and responsive to voltage fluctuations; of a translation circuit; means whereby current in said translation circuit affects the generator regulating means; and means for controlling the current in said translation. circuit and thereby regulating the effect of both the current and voltage fluctuations in said operating means.

13. In an electrical system, a generator; I a work circuit and its translating devices;

a resistance for regulating the generator; a

coil for controlling said resistance responsive to current fluctuations; a second resistance for regulating the generator, a coil for controlling said resistance responsive to voltage fluctuations; a rheostat in the work circuit for regulating the potential at the translating devices; a coil for controlling the action of said rheostat responsive to voltage fluctuations; and means whereby said rheostat regulates the eflect of said current and voltage coils in the control of their respective resistances.

14. In an electrical system, a Work circuit; a main generator; a shunt field winding therefor; a resistance in series with said field winding; an electromagnetic device for controlling said resistance including a coil responsive to variations in generator current for. controlling said device to regulate the generator; a second resistance in series with said field winding; an electromagnetic device for controllingsaid resistance including a coil responsive to variations in generator voltage for controlling said device to for regulating the volta eat the work circuit; and means where y sa d regulatmg device regulates the efi'ect of 'sa1d electromagnetic devices in the control of their respective resistances.

15. The combination with a generator;-

a generator circuit; a work circuit; means I operated by variations in voltage of the comprehending a generator; a translating I work circuit tending to. hold the same constant;'and means aflected thereby for sepa-.

rately regulating the voltage and current of the generator;

16. A system of electrical distribution comprehending a generator; a generator circuit; a work circuit; voltage operated means for holding the voltage across the work circuit substantially constant throughout variations in voltage across the generator circuit; and means aflected by said first means thereby for separately preventing. the generator voltage and current from exceeding predetermined limits.

' 17. A system of electrical distribution responsive to voltage fluctuations of the,

translating circuit aflects the current and voltage regulating means, so as to regulate the current and voltage of the generator separately. a

1 8. A system of electrical distribution means inserted in the work circuit affecting the voltage (thereof; means for operating the same afi'ected by the voltage of the work circuit; means for regulating the generator responsive to voltage fluctuations and to current fluctuations; and means whereb the means for affecting the work circuit a fects the means for regulating the generator to govern the current and voltage of the generator separately.

19. The combination of a generator and means for regulating the same; means for operating; the regulating means; additional means for operating the regulating means; and means for affecting one of said operat ing means and oppositely afiecting the other of said means;

20. The combination of a generator and means for regulating the same; means for operating the regulating means in response to current fluctuations; means for opercomprehending agenerator; a work circuit;

ating the regulating means in response to voltage fluctuations; and means for affecting the first-named operating means so as to raise the standard of current regulation and the second-named operating means so as to decrease the standard of voltage regulation; a

' JOHN L. CREVELING.

Witnesses:

ANNA MARIE WALL, CHAS. M0O. -CHAPMAN. 

